A 100000-person community produces2.5 kg MSW/person/day. Landfill area 12×10⁴ m²,available depth 25 m including cover. Compacted waste density800 kg/m³;MSW:cover volume ratio 5:1. Find life in years, rounded to an integer.
Waste volume/day=100000(2.5)/800=312.5 m³. Including cover, multiply by 6/5 to obtain375 m³/day. Capacity=120000(25)=3000000 m³. Life=3000000/375=8000 days=21.9178 years, or **22 years**. Cover uses capacity although it contributes no municipal waste mass.
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